To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!
CloseWelcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.
CloseReview for StartupMaster by Mr. Lee
Rated 5 out of 5 stars
Used this for years. No one can open my emails without the password. Also works in a dark theme
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